-ic b-p bbb bbc bbi bbo bbp bbs bby bcb bcc bci bco bcp bcs bcy bi- bib bic bii bio bip bis biy bob boc boi boo bop bos boy bpb bpc bpi bpo bpp bps bpy bsb bsc bsi bso bsp bss bsy by- byc byi byo byp bys c-- cbb cbc cbi cbo cbp cbs cby ccb ccc cci cco ccp ccs ci- cib cic cii cio cip cis co- cob coc coi coo cop cos coy cpb cpc cpi cpo cpp cps csb csc csi cso csp css csy cyb cyc cyo cyp cys ibb ibc ibi ibo ibp ibs iby icb icc ici ico icp ics icy iib iic iii iio iip iis io- iob ioc ioi ioo iop ios ipb ipc ipi ipo ipp ips ipy is- isb isc isi iso isp iss isy iyc iyo iys iyy o-i ob- obb obc obi obo obp obs oby oc- ocb occ oci oco ocp ocs oib oic oii oio oip ois oo- oob ooc ooi ooo oop oos op- opb opc opi opo opp ops opy os- osb osc osi oso osp oss oyi oyo oys p-p pbb pbc pbi pbo pbp pbs pby pcb pcc pci pco pcp pcs pib pic pii pio pip pis pob poc poi poo pop pos poy ppb ppc ppi ppo ppp pps ps- psb psc psi pso psp pss psy py- pyb pyc pyo pys sbb sbc sbi sbo sbp sbs sby scb scc sci sco scp scs sib sic sii sio sip sis sob soc soi soo sop sos soy spb spc spi spo spp sps spy ss- ssb ssc ssi sso ssp sss sy- syb syc syi syp sys ybc ybi ybp ybs yby ycc yci yco ycp ycs ycy yii yio yip yis yob yoc yoi yoo yop yos yoy ypo yps ysb ysc ysi yso ysp yss ysy yyb yyc yys yyy